In present years, Security is important concern in Mobile ad hoc Network. MANET is self organized network which contains mobile nodes communicate with each other using wireless links. Nodes in the network are free to move in and out of the network. Due to its unique characteristics like Dynamic topology, Lack of central management, Limited resources, they are vulnerable to various types of atta...

Mobile Ad Hoc Networks are vulnerable to a variety of network layer attacks such as black hole, grey hole, sleep deprivation & rushing attacks. In this paper we present an intrusion detection & adaptive response mechanism for MANETs that detects a range of attacks and provides an effective response with low network degradation. We consider the deficiencies of a fixed response to an intrusion; a...